#include<stdlib.h>
//#include<stdio.h>
char* strcpy(char* src){
	if(src == NULL)
		return NULL;
	char *goal = NULL;
	int L = 0, i = 0;
	while(src[i]!=0){
		i++; 
	} 
	L = i;
	goal = (char*)malloc(sizeof(char)*L);
	for(i = 0;i <= L;i++){
		goal[i] = src[i];
	}
	return goal;
}

//int main(){
//	char *src = NULL,*goal = NULL;
//	src = "Hello World!";
//	goal = strcpy(src);
//	printf("%s\n",goal);
//	return 0;
//}
